78425875 has 16 divisors (see below), whose sum is σ = 106775136. Its totient is φ = 57036000.

The previous prime is 78425873. The next prime is 78425909. The reversal of 78425875 is 57852487.

It is not a de Polignac number, because 78425875 - 2¹ = 78425873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78425873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27144 + ... + 29893.

It is an arithmetic number, because the mean of its divisors is an integer number (6673446).

Almost surely, 2^78425875 is an apocalyptic number.

78425875 is a deficient number, since it is larger than the sum of its proper divisors (28349261).

78425875 is a wasteful number, since it uses less digits than its factorization.

78425875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57063 (or 57053 counting only the distinct ones).

The product of its digits is 627200, while the sum is 46.

The square root of 78425875 is about 8855.8384696199. The cubic root of 78425875 is about 428.0420719553.

The spelling of 78425875 in words is "seventy-eight million, four hundred twenty-five thousand, eight hundred seventy-five".